Acids and bases 0.0 / 5 ? ChemistryAcids, bases and saltsA2/A-levelAQA Created by: OliviaChloeCreated on: 02-12-15 18:05 What is a Bronsted-Lowry acid? A proton donor 1 of 18 What is a Bronsted-Lowry base? A proton acceptor 2 of 18 what is a "typical" equation for an Acid-water reaction? HA(aq) + H2O -----> H3O+(aq) + A-(aq) 3 of 18 What is the term for a substance that can act as both an acid and base? Amphoteric 4 of 18 What is a conjugate acid? The species that donates the protons 5 of 18 What is a Conjugate base? The product formed from the Conjugate acid 6 of 18 What is the equation for pH? pH= -log10[H+] 7 of 18 What is the equation for [H+]? [h+]= 10-pH 8 of 18 What is the equation for Kw? Kw= [H+] [OH-] 9 of 18 What is the number for Kw at 25 degrees? 1.0 x 10(-14) 10 of 18 What is the difference between concentration and strength? Concentration is the measure of an amount in an (AQ), whereas strength is the extent to which the substance has dissociated 11 of 18 What is the equation for Ka? Ka= [H+] [OH-]/ [HA] 12 of 18 What is the equation for pKa? -log10Ka 13 of 18 How can you work out H+ from Ka? [H+] = Sq route (Ka x acid) 14 of 18 How does Phenophthalein work? OH- ions react with H+ ions and are removed as water, EQ. shifts to the right to form pink solution. 15 of 18 what is an appropriate indicator/indicators for strong acid-strong base? Methyl orange or Phenolphtalein 16 of 18 What is an appropriate indicator for Strong acid-Weak base? Methyl orange 17 of 18 What is an appropriate indicator for Weak acid-Strong base? Phenolphtalein 18 of 18
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